Avaliação de fenos de capim-buffel colhido em diferentes alturas de corte

Pinho, Ricardo Martins Araújo; Santos, Edson Mauro; Bezerra, Higor Fábio Carvalho; Oliveira, Juliana; Carvalho, Gleidson Giordano Pinto de; Campos, Fleming Sena; Pereira, Gildênia Araújo; Correia, Robervânia Maria

doi:10.1590/s1519-99402013000300004

Cited by 10 publications

(13 citation statements)

References 5 publications

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“…At this stage, the plant is in a full vegetative development and prioritizes the leaf elongation to increase its photosynthetic capacity, thus accelerating its growth and restoring the leaf area after cutting. A high leaf blade percentage is important to the hay making process, because the leaves improve the hay chemical composition and the dehydration process (Pinho et al 2013).…”

Section: Resultsmentioning

confidence: 99%

“…The increase in the percentage of stems observed in the most advanced cutting ages involves spending energy for the growth and maintenance of this fraction, which negatively influences the forage nutritional value (Van Soest 1994). In addition, the stem has a lower dehydration rate, in relation to the leaves, allowing longer periods of cell respiration for plants and microorganisms (Pinho et al 2013).…”

Section: Resultsmentioning

confidence: 99%

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Cutting ages of elephant grass for chopped hay production1

Ferreira

Abreu

Martinez

et al. 2018

Pesqui. Agropecu. Trop.

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With the advancement of the cutting age, there is an increase in the forage yield of elephant grass (Pennisetum purpureum), but there is also a reduction of the protein levels and digestibility of this forage. This study aimed to identify the ideal cutting age of elephant grass forage (BRS Canará cultivar) to chopped hay production. The experimental design was a randomized block, with five treatments (42, 60, 76, 91 and 105 days of growing) and four replicates. Forage agronomical, morphological and chemical characteristics were evaluated. A linear positive effect of the cutting age was observed on plant height, senescent material and yield of the chopped hay. The leaf percentage and leaf:stem ratio were reduced by the advance in the cutting age. There was also a linear positive effect of the cutting ages on indigestible neutral detergent fiber, neutral detergent fiber corrected for ash and protein and neutral detergent insoluble protein, with increases of 17.13 %, 16.63 % and 20.66 %, respectively. The contents of ashes, crude protein, total digestible nutrients and net lactation energy were reduced with the advance in the forage age. From 76 days, the ashes contents reached values below 9.29 % and the crude protein below 7.16 %. In the same cutting age, the chopped hay yield was 12.91 t ha-1. To improve the hay quality and production, the BRS Canará cultivar must be harvest between 60 and 76 days, when the plants are with 1.20-1.50 m of height, leaf:stem ratio of 0.55-0.44, crude protein of 8.29-7.16 % and indigestible neutral detergent fiber of 26.21-29.06 %.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Cutting ages of elephant grass for chopped hay production1

Ferreira

Abreu

Martinez

et al. 2018

Pesqui. Agropecu. Trop.

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“…According to the Köppen classification, the climate in the region is type BSh', hot semi-arid with average temperatures during the coldest month above 18 °C, and a mean air temperature of 26.5 °C, relative humidity of 66%, mean annual rainfall in the region of 541 mm, and annual class-A pan evaporation of 2,500 mm yr -1 , with the monthly maximum not exceeding 400 mm (Figure 2). Em ambientes semiáridos, o capim buffel chega a produzir 7.207 kg ha -1 ano -1 de massa seca (PINHO et al, 2013), que contém em média 2,44, 1,69 e 4,87 g kg -1 de K, Ca e Mg, respectivamente (LEITE et al, 2006). Enquanto a leucena, que produz entre 1.311 e 7.043 kg ha -1 ano -1 , dependendo do tipo de cultivar (SILVA, 1992), contém em média 17,9, 10,8 e 4,4 g kg -1 de K, Ca e Mg, respectivamente, do sistema.…”

Section: Methodsunclassified

“…In semi-arid environments, buffel grass can produce 7,207 kg ha -1 yr -1 dry matter (PINHO et al, 2013), which contain an average of 2.44, 1.69 and 4.87 g kg -1 of K, Ca and Mg respectively (LEITE et al, 2006), while leucaena, which produces between 1,311 and 7,043 kg ha -1 yr -1 depending on the type of cultivar (SILVA, 1992), contains an average of 17.9, 10.8 and 4.4 g kg -1 of K, Ca and Mg respectively. The removal of biomass from these forages can result in a decrease in the levels of nutrients in the soil.…”

Section: Introductionmentioning

confidence: 99%

Stoichiometric ratios in the soil of native and forage areas in a seasonally dry tropical forest

Santana

Giongo

Silva

et al. 2020

AGRO@MBIENTE ON-LINE

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The availability of potassium (K), calcium (Ca) and magnesium (Mg) in the soil affects the nutrition and productivity of the plant cover. The Ca:Mg, Ca:K and Mg:K stoichiometric ratios indicate the nutrient load balance in the soil. However, limited attention has been paid to providing a scientific basis for how changes in land use, especially the cultivation of forage, impacts the availability and reserves of base cations in semi-arid regions, since, in these environments, fertiliser is not used. Therefore, the aim of this study was to quantify the concentrations of soil K, Ca and Mg in areas of preserved Caatinga (PC), and areas where buffel grass (BG) has been cultivated for 40 years and Leucaena grass (LE) for 11 years. Four 100 x 100 cm trenches were opened in each type of plant cover and collections were made in the 0-5, 5-10, 10-15 and 15-20 cm layers. The concentrations of K, Ca and Mg and their ratios were determined and compared using the Mann-Whitney test. The soil under buffel grass showed higher concentrations of K and Mg, and a lower concentration of Ca. Compared to PC, LE presented a lower Ca content in the 0-5 cm layer only. BG had the lowest values for the Ca:Mg and Ca:K stoichiometric ratios due to depletion of the Ca. Despite being soluble and easily leached, K remained in the soil under each type of cover, favoured by the semi-arid climate. Soil Ca, which is exported due to grazing of the produced biomass, should be replaced so as not to compromise the support capacity of seasonally dry tropical environments through the cultivation of forages.

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“…No semiárido brasileiro, por exemplo, muitas gramíneas vêm sendo utilizadas na implantação de pastagens cultivadas, porém pouco estudadas em termos de estratégias de manejo para a região (Luna et al, 2014). O capim-buffel é uma espécie promissora a ser cultivada nas regiões semiáridas do Brasil, pois apresenta características que permitem o seu desenvolvimento nas condições edafoclimáticas destas regiões (Pinho et al, 2013). Essa forrageira é amplamente cultivada em zonas áridas tropicais e subtropicais ao redor do mundo, devido à sua alta tolerância ao déficit hídrico e resistência ao pisoteio.…”

Section: Introductionunclassified

Respostas do capim-buffel a diferentes períodos de rebrotação e alturas de resíduo

Silva

Pereira

Neto

et al. 2020

RSD

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Objetivou-se avaliar o efeito do período de rebrotação e da altura de resíduo no crescimento do capim-buffel. Utilizou-se delineamento em blocos ao acaso, com três repetições. Os tratamentos consistiram em quatro alturas de resíduo (20, 30, 40 e 50 cm) e quatro períodos de descanso (15, 25, 35 e 45 dias), em arranjo fatorial 4x4. Foram determinados os teores de matéria seca e matéria mineral, a produção e a produtividade do capim. Os dados foram submetidos à análise de regressão a 5% de significância. Não houve interação entre altura de resíduo e o período de rebrotação para nenhuma das variáveis. A produtividade não diferiu em função de nenhuma das fontes de variações. Os teores de matéria mineral decresceram de forma linear em função do período de rebrotação e da altura de resíduo, atingindo 8,65 e 8,84% aos 45 dias e 50 cm de altura, respectivamente. A produção de forragem melhor se ajustou a equações lineares em função do período de rebrotação, alcançando médias de 8884,4 kg ha-1 de massa fresca e 2338,1 kg ha-1 de massa seca aos 45 dias. O capim-buffel manejado com 45 dias de rebrotação proporcionou maior produção de forragem por unidade de área. As menores alturas de resíduo e os períodos de rebrotação mais curtos proporcionaram maiores concentrações de minerais na forragem.

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Avaliação de fenos de capim-buffel colhido em diferentes alturas de corte

Cited by 10 publications

References 5 publications

Cutting ages of elephant grass for chopped hay production1

Cutting ages of elephant grass for chopped hay production1

Stoichiometric ratios in the soil of native and forage areas in a seasonally dry tropical forest

Respostas do capim-buffel a diferentes períodos de rebrotação e alturas de resíduo

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